1131635113 has 4 divisors (see below), whose sum is σ = 1293297280. Its totient is φ = 969972948.

The previous prime is 1131635111. The next prime is 1131635143. The reversal of 1131635113 is 3115361311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3115361311 = 11279 ⋅276209.

It is not a de Polignac number, because 1131635113 - 2¹ = 1131635111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131635111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80831073 + ... + 80831086.

It is an arithmetic number, because the mean of its divisors is an integer number (323324320).

Almost surely, 2^1131635113 is an apocalyptic number.

It is an amenable number.

1131635113 is a deficient number, since it is larger than the sum of its proper divisors (161662167).

1131635113 is an equidigital number, since it uses as much as digits as its factorization.

1131635113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161662166.

The product of its digits is 810, while the sum is 25.

The square root of 1131635113 is about 33639.7846752918. The cubic root of 1131635113 is about 1042.0825850674.

Adding to 1131635113 its reverse (3115361311), we get a palindrome (4246996424).

The spelling of 1131635113 in words is "one billion, one hundred thirty-one million, six hundred thirty-five thousand, one hundred thirteen".